HELP! Red Triangle remains after HV battery swap...

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Wonky, Mar 21, 2015.

  1. Wonky

    Wonky Junior Member

    Joined:
    Jul 22, 2012
    11
    3
    0
    Vehicle:
    2007 Prius
    Model:
    IV
    I have an 07 and replaced the HV battery. Before swapping battery, I had Red Triangle, (!), VSC, Check Engine (took car to dealer who diagnosed it as needing HV battery). Now new battery is in but error-icons remain. The LCD display shows battery as more that half-charged. I connected an old Actron ODB2 scanner (circa 2000), but it doesn't Read any codes and doesn't Erase the codes causing the problem.

    Any help is appreciated!
     
    #1 Wonky, Mar 21, 2015
  2. nh7o

    nh7o Off grid since 1980

    Joined:
    Dec 10, 2011
    1,686
    340
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    II
    Your old OBDII reader won't be of any use in this case. Since the battery meter shows that there is something in the battery, I assume that you have properly reinstalled the battery safety plug. But just to be sure, you need to slide the plug downwards as the last step. There have been a number of similar posts here, failing to do that.

    Otherwise, you will need to get the codes read, and if you can get a mini VCI, that will be the cheapest way to do so.
     
    #2 nh7o, Mar 21, 2015
    Wonky likes this.
  3. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,604
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    reboot the 12v?
     
    #3 bisco, Mar 21, 2015
    Wonky likes this.
  4. Wonky

    Wonky Junior Member

    Joined:
    Jul 22, 2012
    11
    3
    0
    Vehicle:
    2007 Prius
    Model:
    IV
    :D
    The safety-plug was not pushed-down!
    After pushing plug down, all warning lights went out, _except_ for red-triangle ("of death")!?
    Engine came on, car could move (finally) but RTOD persisted.
    Perhaps it would have cured itself eventually, but I disconnected 12V for a minute and now RTOD is gone!

    Sincere "Thank You!" nh70 & bisco !!!
     
    #4 Wonky, Mar 22, 2015
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,604
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    good call, nh7o.(y)
     
    #5 bisco, Mar 22, 2015
  6. nh7o

    nh7o Off grid since 1980

    Joined:
    Dec 10, 2011
    1,686
    340
    0
    Location:
    Hawaii
    Vehicle:
    2009 Prius
    Model:
    II
    This has been a repeated theme, now that so many DIY's are replacing their batteries. I was not aware that the SOC will still show something even with no battery on the line. What's with that? Surge caps in the inverter would not retain that much charge.
     
    #6 nh7o, Mar 22, 2015
(You must log in or sign up to post here.)